Wrench.



PATENTED FEB. 21, 1905.

A. G. HUNTER.

WRENCH.

APPLICATION FILED NOV. 17, 1904.

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Umrnn STATES Patented February 21, 1905.

PATENT @rrica. I

WRENCH.

SPECIFICATION forming part of Letters Patent No. 783,278, dated February 21, 1905.

Application filed November 17,1904. Serial No. 233,192.

T 0 all 1072,0171, it may concern.-

Be it known that I, ARTHUR G. HUNTER, a citizen of the United States, residing at Elmview, in the county of Grrayson and State of Texas, have invented new and useful Improvements in WVrenches, of which the following is a specification.

This invention relates to wrenches, and has for its objectsto produce a simple inexpensive device of this character which may be readily manipulated with one hand and accurately adjusted to the desired size and one wherein the movable jaw after adjustment will be securely locked against movement.

A further object of the invention is to provide a wrench wherein the parts may be readily disconnected to permit of new parts being substituted for those that become worn and one wherein the movable jaw and its-locking member will be guided in their movements.

NVith these and other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a side elevation of a wrench embodying the invention. Fig. 2 is a detail longitudinal section centrally through the sleeve or casing and adjacent parts. Fig. 3 is across-section taken on the line 3 3 of Fig. 2.

Referring to the drawings, 1 designates a bar or shank carrying at its forward end a fixed head or jaw 2 and having a rear reduced portion 3 adapted for the reception of a handle l, there being formed at the juncture of the shank and its reduced portion 3 a shoulder 5 for a purpose which will hereinafter appear, the terminal of the portion 3 being threaded, as at 6, for the reception of a fastening memher or nut 7 which bearsupon the rear end of the handle 41 to secure the latter in place.

Arranged for sliding movement longitudinally of the shank 1 is a movable jaw 8, adapted to cooperate with the jaw 2 for engaging a nut or other body, there being pivotally connected to the jaw 8 by means of a pintle 9 the forward end of a rigid element or link 10, provided at its rear end with a longitudinally-disposed slot 11, in which is pivoted a locking member or dog 12. The dog 12 is provided outer ends of the teeth are in a plane common to that of the adjacent edge of the shank.

Seated upon the shank 1 is a tubular sleeve or casing 18, having a longitudinal opening for the reception of the shank and provided at the rear end of said opening with an internal collar or abutment 19, adapted to contact with the shoulder 5 for fixing the casing against forward movement upon the shank, there being formed at the rear terminal of the casing a socket or recess 20, in which the forward end of the handle 1 seats, whereby when the nut 7 is in position the sleeve will be fixed against rearward movement on the shank. The sleeve, which is of greater width than the shank, is provided on the inner faces of its side walls with opposed longitudinal ribs or flanges 21, adapted for engagement with the adjacent edge of the shank, and, further, with longitudinal ribs or flanges 22, projecting inward from the side walls of the casing at the outer edges of the latter, thus to produce a longitudinal slot or guideway 23 for the reception of the locking member 1-2. The outer flanges 22 are appropriately spaced from the inner flanges 21 in a direction transversely of the casing 18 and, illustrated in Fig. 3, produce a chamber 23, extending longitudinally of the casing for the reception of the link 10 during its longitudinal movements for actuating the jaw 8.

' The link 10 has formed therein an internal longitudinally-extending socket 24 for the reception of a plunger 25, on which is disposed a pressure-spring 26, adapted for moving the locking member 12 to engaging position, the rear end of the plunger'25 being seated in a suitable socket formed in the locking member, as seen at 27 in Fig. 2.

vided with a longitudinal chamber and a guidenected at the forward end of the latter by way communicating with said chamber, alink means of a connecting element or rivet 28, connected with the movable jaw and adapted 5 which is disposed between the adjacent edge for entrance into and movement longitudiof the shank 1 and the link 10, thus serving nally of the chamber, and a locking-member to maintain the parts in proper spaced relacarried by the link, said member being movtion and afford a bearing for the link during ably disposed within the guideway and deits movements, signed for engagement with the shank to fiX 55 In practice the operator grasps the handle the movable jaw against movement.

IO 4 and places his thumb upon the head 18 of 2. In a Wrench, a shank carrying a fixed the locking member for manipulating the jaw and provided with a series of teeth, a movlatter. A slight forward movement of the able jaw slidably disposed upon the shank, a outer or headed end of the member serves to link connected with the movable jaw, a sleeve 60 release the teeth 14 from the toothed bar 15, mounted upon the shank and having a longi- S whereupon the jaw 8 may through the metudinal chamber for the reception of the link,

dium of the locking member and link 10 be andaguideway communicating withthe chammoved readily back and forth, as desired, ber, a locking member carried by the link, upon the shank 1, thus adjusting the movable said member being arranged for movement in 5 jaw relative to the jaw 2. After the desired the guideway and adapted for engagementwith adjustment has been obtained the member 12 the teeth on the shank to lock the movable jaw is released, and the spring 26 acts to throw against movement, and a spring acting on the the tooth 1 1 automatically into engagement locking member to maintain the latter in enwith one of the teeth upon the bar 16, thereby gaging position. 70 locking the jaw 8 againstfurther rearward 3. In a wrench, a shank carrying a fixed 5 movement. jaw and provided with a series of teeth and a It is to be particularly noted that the guidereduced portion forming a shoulder, a movway 23 between the flanges 22 is ofa width able jaw slidably disposed upon the shank, a equaling that of the bar 16 and that the locklink connected with the movable jaw, a sleeve 75 ing member 12 is of a corresponding thickseated upon the shank and having an internal 3 ness,wherebyasecureengagementof thetooth abutment adapted for engagement with the 1 1 with the teeth 15 is afforded, and, furthershoulder, said sleeve being provided withalonmore, that by the removal of the nut 7 the gitudinal chamber forthereception of the link parts of the wrench may be readily disconandaguideway communicating with the cham- 8O nected to permit of the substitution of a new her, a locking member carried by the link part for any one thathas become worn or otherand formed for engagement with the teeth on wise defective. the shank to lock the movable jaw against move- From the foregoingitis apparent that I proment, a handle disposed upon the reduced porduce a simple. device admirably adapted for tion of the shank and bearing at its forward 5 the attainment of the ends in view, it being unend against the rear end of the sleeve, and a 4 derstood that minor changes in the details fastening member engaging the shank at the herein set forth may be resorted to without rear end of the handle. departing from the spirit of the invention. In testimony whereof I affix my signaturein Having thus fully described the invention, presence of two witnesses. what is claimed as new is- ARTHUR G. HUNTER.

1. In a wrench, a shank having a fixed jaw, Witnesses:

The side walls of the casing 18 are con- JOHN R. DAVIS, SYLVANUS A. Scno'r'r.

a movable jaw slidably disposed upon thev shank, a sleeve seated on the shank and prol 

